Examine source code of mobile-friendly-reddit

{
  "description": "Disables anti-features from Reddit's mobile site",
  "manifest_version": 2,
  "name": "mobile-friendly-reddit",
  "version": "1.2.1",
  "developer": {
    "name": "Lucas Ruby",
    "url": "https://github.com/lucas-ruby/mobile-friendly-reddit"
  },
  "icons": {
    "32": "icons/icon.svg",
    "48": "icons/icon.svg",
    "64": "icons/icon.svg",
    "96": "icons/icon.svg",
    "128": "icons/icon.svg",
    "256": "icons/icon.svg"
  },
  "applications": {
    "gecko": {
      "id": "mobile-friendly-reddit@lucas-ruby"
    }
  },
  "permissions": [
    "storage",
    "*://*.reddit.com/*",
    "*://*.redditmedia.com/*",
    "*://*.redd.it/*",
    "*://*.redditstatic.com/*"
  ],
  "options_ui": {
    "page": "preferences.html",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*",
        "*://*.redd.it/*"
      ],
      "css": [
        "friendly.css"
      ],
      "js": [
        "friendly.js"
      ]
    }
  ]
}